Abstract: A fin array is disclosed for use in a centrifugal fan having a housing and a fan wheel, the fin array having: a first tube in a first plane perpendicular to an axis of the fan wheel; a second tube in a second plane parallel to the first plane; and a fin in a third plane parallel to the first place. The fin is sandwiched between the first tube and the second tube, all of which partially surround the axis of the fan wheel. The fin comprises a slotted fin apparatus for permitting condensate to move from a region between the fan wheel and the first tube to a region between the first tube and the housing. The slotted fin apparatus has a first cutout disposed between a first extension and a second extension along at least a port of the length of the fin.

Abstract: A fin array is disclosed for use in a centrifugal fan having a housing and a fan wheel, the fin array having: a first tube in a first plane perpendicular to an axis of the fan wheel; a second tube in a second plane parallel to the first plane; and a fin in a third plane parallel to the first place. The fin is sandwiched between the first tube and the second tube, all of which partially surround the axis of the fan wheel. The fin comprises a slotted fin apparatus for permitting condensate to move from a region between the fan wheel and the first tube to a region between the first tube and the housing. The slotted fin apparatus has a first cutout disposed between a first extension and a second extension along at least a port of the length of the fin.

Abstract: A fin array is disclosed for use in a centrifugal fan having a housing and a fan wheel, the fin array having: a first tube in a first plane perpendicular to an axis of the fan wheel; a second tube in a second plane parallel to the first plane; and a fin in a third plane parallel to the first plane. The fin is sandwiched between the first tube and the second tube, all of which partially surround the axis of the fan wheel. The fin comprises a slotted fin apparatus for permitting condensate to move from a region between the fan wheel and the first tube to a region between the first tube and the housing. The slotted fin apparatus has a first cutout disposed between a first extension and a second extension along at least a portion of the length of the fin.

Abstract: A heat exchanger including an array of tubes and fins is configured to reside in a centrifugal fan enabling the centrifugal fan to operate as a cooling and or heating source. The array of tubes and fins is configured to permit condensate to drain from the array.

Abstract: A heat exchanger including an array of tubes and fins is configured to reside in a centrifugal fan enabling the centrifugal fan to operate as a cooling and or heating source.

Abstract: A heat exchanger including an array of tubes and fins is configured to reside in a centrifugal fan enabling the centrifugal fan to operate as a cooling and or heating source.

Abstract: A fan driven evaporator is one component for use in refrigeration applications such as an evaporative cooler which employs refrigeration. In one embodiment, a frosting evaporative cooler utilizes an evaporator in the shape of a squirrel cage blower that utilizes alternating and opposing flows of refrigerant in refrigerant tubing to allow for the dehumidifying and cooling of humid air without freezing over and losing air flow. A fan for use in coolers in humid conditions comprises a motor driving a centrifugal blower. At least two cooling coils that are parallel have cooling fins separating all the coils. The coils surround the blower wheel thereby matching the shape of the outside of the blower housing.